Subscribe
73
Zhang Peng
General Surgery
About me
Studied at Changzhi Medical College from 2004 to 2009, graduated with a bachelor's degree; Studied at Qinghai University from 2009 to 2012, graduated with a master's degree in surgery; Employed at Linfen People's Hospital in July 2012, working in general surgery to present. Visiting scholar at Peking University Medical School from March to December 2019.
Proficient in diseases
Common diseases in general surgery: comprehensive treatment of gastrointestinal tumors, thyroid and breast diseases, inguinal hernia, etc.
Voices
How long do you have to get a tetanus shot?
It is generally recommended to receive an injection as soon as possible after a trauma, ideally within 24 hours, because tetanus has a certain incubation period, with the shortest being able to cause disease within 24 hours. There is still value in receiving the injection after 24 hours; it can alleviate symptoms and play a preventive treatment role. For tetanus, it is usual to administer a tetanus shot, and most people can choose between tetanus antitoxin or tetanus immunoglobulin. The duration of these two drugs is not the same; tetanus antitoxin lasts about three days, while tetanus immunoglobulin can last up to three weeks. However, this is not an absolute conclusion. Beyond this time, if there are high-risk factors for reinfection, a repeat injection is needed. If a patient has previously been protected by an active immunization regimen, in most cases, no special preventive treatment is needed within three years of the last vaccination.
When is the best time to get a tetanus shot?
Tetanus infection carries a certain mortality rate, with current statistics indicating that the death rate from tetanus infection can reach around 40%. Typically, tetanus is caused by an acute, specific infection resulting from the growth and reproduction of Clostridium tetani in human wounds, which produce toxins. Generally, it can only grow and reproduce in an anoxic environment, so it is most commonly found in soil, human and animal feces, and rust. For wounds, especially sharp and deep cuts, it is usually vital to administer a tetanus shot promptly. The choices generally are tetanus immunoglobulin or tetanus antitoxin, which have different half-lives; tetanus antitoxin generally lasts about three days, whereas tetanus immunoglobulin can last up to three weeks. Therefore, in the presence of high-risk infection factors, it is advisable to administer the injection as soon as possible, generally recommended within 24 hours.
How long does thyroid nodule surgery take?
This depends on individual circumstances. Generally, when performing thyroid surgery, there are two methods: open and minimally invasive, though the treatment procedures are largely similar. For nodules, we first need to determine their nature. If they are benign, then removal within a certain range during surgery may suffice. However, if intraoperative freezing suggests malignancy, then we face the issue of lymph node dissection, which could significantly prolong the duration of the surgery.
What will happen if an umbilical hernia is not treated?
If umbilical hernia is not treated, in general, adults are more likely to experience incarceration or strangulation. For children with umbilical hernias, conservative observation is usually adopted, and surgery is not necessary within the first two years unless incarceration occurs. During the waiting period, adhesive tape fixation can be used as a treatment method. If the umbilical hernia is larger than two weeks, and the diameter of the umbilical ring is generally more than 1.5 cm, surgical treatment is required. For children over five years old, regardless of the situation, it is advisable to undergo timely surgery. Adults with umbilical hernias are generally advised to have surgery as soon as possible. The surgical methods typically include traditional tissue repair or open tension-free hernia repair. For patients suitable for laparoscopic treatment, laparoscopic surgery is chosen as it causes less trauma and allows for the preservation of the umbilicus without extensive dissection, no need for drainage placement, and a very low chance of wound infection.
Is the survival rate for rectal cancer high?
Rectal cancer is primarily a malignant tumor, and there are individual differences in treatment, even differing biological behaviors. Some people discover it early, while others find it later, sometimes even with multiple metastases. If it is diagnosed in a later stage, naturally, the patient's survival period is shorter. Surgical treatment of rectal cancer is one aspect, and subsequent measures to possibly extend the patient's survival include radiotherapy, chemotherapy, targeted therapy, immunotherapy, etc.
How is tetanus diagnosed?
For the diagnosis of tetanus, it mainly relies on relevant medical history and clinical manifestations. In terms of laboratory diagnosis, most cases involve culture of Clostridium tetani from wound tissue or polymerase chain reaction testing. Generally, a positive result can confirm a diagnosis of tetanus, but a negative result does not rule it out. Most laboratories are unable to perform these tests, and even if tetanus antibodies reach a protective level, it does not exclude a diagnosis of tetanus. If the patient has a clear history of injury or animal bites, and presents with symptoms such as lockjaw, a sardonic smile, muscle rigidity, difficulty swallowing, or persistent spasms, tetanus should be considered promptly and relevant treatment initiated.
How long does tetanus antibody last?
The duration of tetanus antibodies varies under two scenarios. The first is passive immunity, which is achieved through injections such as tetanus antitoxin or tetanus immunoglobulin. The duration of immunity provided by these injections is relatively short. Typically, tetanus antitoxin lasts about four days, while tetanus immunoglobulin can last up to three weeks. After this period, the levels of antibodies gradually decrease, and the body may no longer be protected. Therefore, a single application of tetanus antitoxin or immunoglobulin does not provide long-lasting immunity. The second scenario involves antibodies produced by active immunity, generally through the injection of a vaccine made from attenuated tetanus bacilli. Antibodies usually start to develop about ten days after vaccination, with levels gradually increasing over two to three months and remaining high. This type of immunity lasts up to about ten years, but it is not lifelong. Regular boosters, guided by relevant tests, are required to maintain immunity.
How long can a tetanus shot last?
The duration of a tetanus shot can be considered from two different immunization processes. In the case of passive immunity, it typically lasts for a shorter duration. If tetanus antitoxin is administered, it generally lasts between two to four days, while tetanus immunoglobulin can last up to three weeks. After this period, the level of antibodies gradually decreases, and the body may no longer be protected. Therefore, a single use of tetanus antitoxin or immunoglobulin does not provide lasting immunity. The second method is what we commonly refer to as getting a tetanus vaccine, which is a process of active immunity. Usually, for active immunity, the tetanus bacterium is processed and made into a weakened vaccine for injection. Antibodies can be produced after about ten days, and within two to three months, the level of antibodies in the body gradually increases and remains at a high titer, providing immunity for up to about ten years.
Intestinal obstruction etiology
What are the causes of intestinal obstruction? Generally, in clinical practice, the causes and inducements of intestinal obstructions are mainly divided into the following aspects: Firstly, there are extraintestinal disorders, such as some space-occupying lesions in the abdominal cavity compressing the intestinal tube, causing narrowing of the intestinal lumen and thus obstruction. Additionally, there are diseases of the intestines themselves. Some severe intestinal diseases or tumorous conditions, or ischemic diseases of the intestines themselves, can all potentially lead to intestinal obstruction. If the symptoms of intestinal obstruction are typical, hospital treatment and possibly surgery may be necessary. Furthermore, some motility factors within the abdominal cavity can also cause intestinal obstruction, such as a reduction in the motility of the intestines or paralysis and expansion of the intestines due to electrolyte disturbances, leading to symptoms of intestinal obstruction.
Characteristics of Appendicitis Pain
The most typical pain manifestation of appendicitis is migratory pain, which generally starts in the upper abdomen or around the navel, and in most cases moves to the lower right abdomen and becomes fixed within a few hours. During physical examination, the pain usually localizes to a fixed point in the lower right abdomen, typically at McBurney's point, although this can vary with the position of the appendix. However, as the condition of the appendix progresses, such as when it becomes purulent or even gangrenous, the inflammation worsens and the area of tenderness can expand. This is mostly manifested by symptoms of peritoneal irritation, which are generally indicative of the timing for surgery. In most cases of appendicitis where the diagnosis is clear, early surgical intervention is recommended, as surgery is the only cure. Most patients who improve with conservative treatment are likely to experience recurrence later on.